NH82801DBSL8DE 869490 Intel, NH82801DBSL8DE 869490 Datasheet - Page 55
NH82801DBSL8DE 869490
Manufacturer Part Number
NH82801DBSL8DE 869490
Description
Manufacturer
Intel
Datasheet
1.NH82801DBSL8DE_869490.pdf
(587 pages)
Specifications of NH82801DBSL8DE 869490
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2.20.4
2.20.4.1
Intel
®
Figure 2-3. Example V5REF Sequencing Circuit
Table 2-21. Test Mode Selection
82801DB ICH4 Datasheet
Note: RTCRST# may be driven low any time after PCIRST is inactive. Refer to
Test Signals
Test Mode Selection
When PWROK is active (high) for at least 76 PCI clocks, driving RTCRST# active (low) for a
number of PCI clocks (33 MHz) will activate a particular test mode a specified in
detailed description of the ICH4 test modes.
Number of PCI Clocks RTCRST#
Driven Low after PWROK Active
15–42
43–51
9–13
>53
<4
14
52
53
4
5
6
7
8
Vcc Supply
To System
(3.3 V)
Diode
5VREF
Reserved. DO NOT ATTEMPT
Reserved. DO NOT ATTEMPT
No Test Mode Selected
No Test Mode Selected
No Test Mode Selected
XOR Chain 4 Bandgap
XOR Chain 1
XOR Chain 2
XOR Chain 3
XOR Chain 4
XOR Chain 6
Test Mode
Long XOR
1 F
All “Z”
1 k
5 V Supply
To System
Section 19.1
Signal Description
Table
for a
2-21.
55
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